Bertin Technologies ALPHAGUARD DF2000 - Page 18

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USER MANUAL
For the connection of external sensors with digital output (counting
signals), I²C or analogue output (with voltage of 0 - 2,5 V)
Pin assignment:
Pin 1
AN_OUT
Pin 2
VCC
Pin 3
V1
Pin 4
VEXT Enable
Pin 5
GNDA
Pin 6
Analog input
2
Pin 7
Analog input
1
Pin 8
SDA
Pin 9
SCL
Pin 10
Counter 1 in
Pin 11
Counter 2 in
Pin 12
GND
Depending on the user’s choice, different external sensor units may be used. It
is required that the electrical signal from the analogue sensors
ranges from 0 -
2,5 V. The signal from these sensors is tapped in a 2-sec interval and digitalized
with a resolution of 12 bit. In the storage of the AlphaGUARD the mean value
over 1, 10 resp. 60 minutes is filed.
Typical external additional sensors are besides the
Differential Pressure Sensor
(DSP-5000) and the Multisensor Unit for recording differential pressure,
temperature or flow rates, for example:
x
Anemometer for recording wind/weather speeds
x Micro manometer for determining differential pressure (inside-
/outside
pressure)
x Thermo hydrometer for measuring ground temperature / -dampness
x Rain gauge for recording periods of precipitation
When using the sockets for external sensors a correct allocation of the
connectors always has to be granted.
False seizure or false voltage at the
connector pins of the sockets can cause damage on the AlphaGUARD or
the connected electronic unit.
Note